Tone arm assembly for automatic phonograph

ABSTRACT

This invention relates generally to an automatic phonograph, and more particularly to an automatic phonograph for playing either side of a particular record selected from a plurality of records.

States n [191 Osborne et a1.

TONE ARM ASSEMBLY FOR AUTOMATIC PHONOGRAPH inventors: Fred H. Osborne;Robert S. Tuttle; Michael J. Corbett, all of North Tonawanda, NY.

Assignee: The Wurlitzer Company, Chicago,

Filed: Feb. 19, 1970 Appl. No.: 14,866

Related U.S. Application Data Division of Ser. No. 619,687, March 1,1967, Pat. No. 3,501,153.

U.S. Cl. ..274/23 R Int. Cl. ..G1lb 3/10 Field of Search ..274/l0 R, 23R, 15 R [56] References Cited UNITED STATES PATENTS 2,488,260 11/1949Ascoli ..274/15 R 2,969,239 1/1961 Loose ..274/10 R 3,411,791 11/1968Dennis ..274/10 R 3,305,239 2/1967 Hathaway ..274/10 R PrimaryExaminerLe0nard Forman Assistant Examiner-Steven L. StephanAttorney-0lson, Trexler, Wolters & Bushnell ABSTRACT This inventionrelates generally to an automatic phonograph, and more particularly toan automatic phonograph for playing either side of a particular recordselected from a plurality of records.

3 Claims, 43 Drawing Figures 54 Iii I PATENTELWYZZIW 3.734512 SHEET onHF 21 PATENTEL 1 1%2 2197a k w werzbrs PATENTELHYZEIENS sum 11% 21llllll III/ PATENTQ ELY P. 2 W5 sum 12 s? 2 PATENIELH 3.734.512

SHEET 17 [1F 21 PATENTEL W122 [973 sum 18 [1F 21

1. A tone arm assembly comprising: a tone arm; a first member axiallyspaced from and mounted for rotation contemporaneously with and about acommon axis with said tone arm, said first member having a pinprojecting therefrom substantially parallel to said axis; a secondmember rotatable about said common axis and positioned arcuately on afirst side of said first member and displaced axially thereof, saidsecond member having an integral tab thereon extending axially in agiven direction and engaging said pin on one side thereof; a thirdmember rotatable about said common axis and positioned arcuately on asecond side of said first member and displaced axially of said firstmember and of said second member, said third member having an integraltab thereon extending opposite to said given direction and engaging saidpin directly opposite to the tab on said second member; resilient meansinterconnecting said second and third members to urge said second andthird members toward each other and into clamping engagement with saidfirst member projection to enable the tone arm to be moved relative to aturntable by moving said third member relative to the turntable; and astop means associated with the tone arm and positioned in apredetermined relationship relative to the turntable for engagement bysaid second member to effect movement of said second and third membersrelatively away from each other and therefor out of clamping engagementwith said first member pin to enable said first member and the tone armto move freely relative to the turntable when a record is being playedon the turntable.
 2. A tone arm assembly as set forth in claim 1 furtherincluding: a fourth member fixedly connected to said first member and afifth member fixedly connected to the tone arm, said fourth and fifthmembers being movable relative to each other to adjust the position ofthe tone arm relative to said first member and said turntable to enablethe tone arm to be adjusted to engage the initial section of a record.3. A tone arm assembly as set forth in claim 1 further including: switchmeans associated with the tone arm and located in a predeterminedrelationship relative to the turntable, said switch means being engagedby said first member after the record has been played to signal the endof the record.